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Exovate Digital is a forward-thinking digital agency scaling their outbound sales operations. As their client base and service offerings grew, their sales team faced a significant bottleneck: managing high-volume cold email outreach across multiple domains while keeping track of replies, follow-ups, and engagement metrics.
They needed a robust, centralized engine that could handle lead verification, AI-assisted content formatting, and perfectly threaded follow-ups without relying on restrictive, off-the-shelf SaaS platforms. Crucially, they needed their data out of silos and visualized in real-time so leadership could make informed, data-driven decisions.
For a growing agency, manual email outreach is unsustainable and prone to costly errors.
We engineered Exomail, a fully autonomous, 5-segment outreach and analytics platform built heavily on n8n, PostgreSQL, and Metabase.
Incoming leads are verified in real-time via the Snov.io API. Approved leads have their raw email copy perfectly formatted into HTML using OpenAI (GPT-4.1-mini), ensuring a clean, professional look with customized HMAC-SHA256 tracking pixels injected.
Emails are dispatched via Nodemailer, with a sophisticated IMAP flow syncing the outbound message directly to the sender’s exact Sent folder. A daily cron job calculates follow-up dates (with logic to automatically skip weekends) and dispatches dynamic templates directly into the original email thread.
The system continuously polls inboxes. If a prospect replies, the sequence is instantly killed, and the team is notified via a dedicated Discord channel. Simultaneously, all operational data—opens, replies, and sends—is warehoused in a self-hosted PostgreSQL database and visualized in real-time through an interactive Metabase BI dashboard.
Exomail completely removed the manual friction from cold outreach, allowing the sales team to focus on closing while giving leadership complete transparency over pipeline health.
| Activity | Before | After |
|---|---|---|
| Lead Verification | Manual checks or skipped entirely | Automated via Snov.io API before sending |
| Follow-Up Scheduling | Tracked manually in spreadsheets | 100% automated with weekend-skipping logic |
| Reply Handling | Manual inbox monitoring | Automated polling, Discord alerts, and instant sequence kill |
| Analytics & Reporting | Fragmented data across platforms | Centralized, live Metabase BI dashboard |
| Component | Technology |
|---|---|
| Workflow Orchestration | n8n |
| Database & BI | PostgreSQL, Metabase |
| Email Infrastructure | Hostinger SMTP, ImapFlow, Nodemailer |
| AI & Verification | OpenAI, Snov.io API |
| Notifications | Discord Webhooks |